Average Speed solo: 40K ITT; 23.8
Average Cadence solo: 40K ITT; 91
Average Cadence group: 40K TTT; 89 (there was some coasting)
Average Speed group: 40K TTT; 26.94
Chain Ring sizes (eg. 50/36): 53/39
Cassette range (eg. 12-28): 11-25
Number of sprockets on cassette: 10
Age: 57
Typical group rides are significantly slower than the TTT, but you had asked for major efforts. These were both relatively low-cadence efforts for me because well, it was just that sort of a day - not at my best.